Updating a user's Presence via XSAPI C

auto asyncBlock = std::make_unique<XAsyncBlock>();
asyncBlock->queue = queue;
asyncBlock->context = nullptr;
asyncBlock->callback = [](XAsyncBlock* asyncBlock)
{
    std::unique_ptr<XAsyncBlock> asyncBlockPtr{ asyncBlock }; // Take over ownership of XAsyncBlock*.
    HRESULT hr = XAsyncGetStatus(asyncBlock, false);
    if (FAILED(hr))
    {
        // Log the failure. To choose how to handle it, call XblGetErrorCondition(hr).
    }
};

HRESULT hr = XblPresenceSetPresenceAsync(xboxLiveContext, true, nullptr, asyncBlock.get());
if (SUCCEEDED(hr))
{
    // The call succeeded, so release the std::unique_ptr ownership of XAsyncBlock* because the callback will take over ownership.
    // If the call fails, std::unique_ptr will keep ownership and delete XAsyncBlock*.
    asyncBlock.release();
}

#include <memory>
#include <string.h>
#include <xsapi-c/services_c.h>

HRESULT SetRichPresence(XblContextHandle xboxLiveContext, XTaskQueueHandle queue)
{
    // Get the SCID that you passed to XblInitialize.
    const char* scid = nullptr;
    HRESULT hr = XblGetScid(&scid);
    if (FAILED(hr))
    {
        return hr;
    }

    XblPresenceRichPresenceIds ids{};
    if (strcpy_s(ids.scid, sizeof(ids.scid), scid) != 0)
    {
        return E_INVALIDARG;
    }
    ids.presenceId = "playingMap";

    // Use a new XAsyncBlock for each call.
    auto asyncBlock = std::make_unique<XAsyncBlock>();
    asyncBlock->queue = queue;
    asyncBlock->context = nullptr;
    asyncBlock->callback = [](XAsyncBlock* asyncBlock)
    {
        std::unique_ptr<XAsyncBlock> asyncBlockPtr{ asyncBlock }; // Take over ownership of XAsyncBlock*.
        HRESULT result = XAsyncGetStatus(asyncBlock, false);
        if (FAILED(result))
        {
            // Log every failure. To choose how to handle it, call XblGetErrorCondition(result).
            // For XblErrorCondition::Http429TooManyRequests, don't retry right away.
        }
    };

    hr = XblPresenceSetPresenceAsync(xboxLiveContext, true, &ids, asyncBlock.get());
    if (SUCCEEDED(hr))
    {
        // The callback now owns the XAsyncBlock.
        asyncBlock.release();
    }
    return hr;
}